Fix ClangTidy warnings in btree.h.

PiperOrigin-RevId: 618872032
Change-Id: I9fdfadff906494eb64cee976c02a1fff57923c79

absl/container/BUILD.bazel

@@ -1004,6 +1004,7 @@ cc_library(
         ":compressed_tuple",
         ":container_memory",
         ":layout",
+        "//absl/base:config",
         "//absl/base:core_headers",
         "//absl/base:raw_logging_internal",
         "//absl/base:throw_delegate",
@@ -1012,7 +1013,6 @@ cc_library(
         "//absl/strings",
         "//absl/strings:cord",
         "//absl/types:compare",
-        "//absl/utility",
     ],
 )
 

absl/container/CMakeLists.txt

@@ -27,10 +27,11 @@ absl_cc_library(
   LINKOPTS
     ${ABSL_DEFAULT_LINKOPTS}
   DEPS
-    absl::container_common
     absl::common_policy_traits
     absl::compare
     absl::compressed_tuple
+    absl::config
+    absl::container_common
     absl::container_memory
     absl::cord
     absl::core_headers
@@ -40,7 +41,6 @@ absl_cc_library(
     absl::strings
     absl::throw_delegate
     absl::type_traits
-    absl::utility
 )
 
 # Internal-only target, do not depend on directly.

absl/container/internal/btree.h

@@ -53,11 +53,11 @@
 #include <functional>
 #include <iterator>
 #include <limits>
-#include <new>
 #include <string>
 #include <type_traits>
 #include <utility>
 
+#include "absl/base/config.h"
 #include "absl/base/internal/raw_logging.h"
 #include "absl/base/macros.h"
 #include "absl/container/internal/common.h"
@@ -70,7 +70,6 @@
 #include "absl/strings/cord.h"
 #include "absl/strings/string_view.h"
 #include "absl/types/compare.h"
-#include "absl/utility/utility.h"
 
 namespace absl {
 ABSL_NAMESPACE_BEGIN
@@ -475,7 +474,7 @@ struct SearchResult {
 // useful information.
 template <typename V>
 struct SearchResult<V, false> {
-  SearchResult() {}
+  SearchResult() = default;
   explicit SearchResult(V v) : value(v) {}
   SearchResult(V v, MatchKind /*match*/) : value(v) {}